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Cursor

Posted via Ashby

Software Engineer, Model Routing & Inference

Posted Aug 5, 2026

Role at a glance

Salary
Not Disclosed
Location
New York, United States San Francisco, New York, United States
Work arrangement
On-site
Employment
Full-time
Experience
deep experience building high-throughput, low-latency distributed systems

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Role Summary

AI-generated

As a Software Engineer on Cursor's Model Routing & Inference team, you will build the inference platform powering every AI interaction in the product. The team owns the full inference path, including the gateway, routing, reliability, and traffic-control systems used by agent sessions, tab completions, and chat messages.

What You'll Do

  • Build and evolve an inference gateway that abstracts provider API semantics.
  • Design cross-provider failover to reduce user-visible degradation from provider outages.
  • Design routing backpressure and admission control to prevent traffic spikes from cascading into providers.
  • Improve inference speed, reliability, and cost-effectiveness at scale.

Generated from the employer's posting. Verify important details before applying.

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Qualifications

Experience building high-throughput, low-latency distributed systems, especially in inference serving, traffic routing, or real-time data pipelines; ability to reason about cost/performance tradeoffs at scale; strong software engineering fundamentals; experience shipping production systems that handle millions of requests.

Required

  • High-throughput, low-latency distributed systems experience
  • Inference serving, traffic routing, or real-time data pipeline experience
  • Cost/performance tradeoff analysis at scale, including GPU utilization, provider economics, or capacity planning
  • Strong software engineering fundamentals
  • Experience shipping production systems that handle millions of requests

Original job description

Content provided by the employer
View on company site

Our mission is to automate coding. The first step in our journey is to build the best tool for professional programmers, using a combination of inventive research, design, and engineering. Our organization is very flat, and our team is small and talent dense. We particularly like people who are truth-seeking, passionate, and creative. We enjoy spirited debate, crazy ideas, and shipping code.

About the Role

As a Software Engineer on the Model Routing & Inference team at Cursor, you'll build the inference platform that powers every AI interaction in the product.

This team owns the full inference path: making Cursor's AI faster, more reliable, and more cost-effective at a scale few teams in the world get to operate at. Every agent session, every tab completion, and every chat message flows through your stack.

Example projects include...

  • Building and evolving our inference gateway, a single abstraction over every provider's API semantics, so model onboarding becomes a config change.

  • Designing intelligent cross-provider failover so no single provider outage causes user-visible degradation.

  • Designing routing backpressure and admission control so traffic spikes don't cascade into providers.

You may be a fit if

  • You have deep experience building high-throughput, low-latency distributed systems, especially in inference serving, traffic routing, or real-time data pipelines.

  • You're comfortable reasoning about cost/performance tradeoffs at scale (GPU utilization, provider economics, capacity planning).

  • You have strong software engineering fundamentals and enjoy shipping production systems that handle millions of requests.

  • You make good calls in the gray area: weighing reliability, cost, latency, and user experience when there isn't a single "right" answer.

Applying

If there appears to be a fit, we'll reach to schedule 2-3 short technicals. After, we'll schedule an onsite in our office, where you'll work on a small project, discuss ideas, and meet the team.

#LI-DNI

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About the company

Cursor

Startup

Cursor is an innovative technology company specializing in software development and digital solutions tailored for businesses of all sizes. With a focus on enhancing user experience and operational efficiency, Cursor offers a range of products, including custom applications, cloud services, and data analytics tools. The company prides itself on its collaborative approach, working closely with clients to understand their unique needs and deliver effective solutions. Committed to driving digital transformation, Cursor strives to empower organizations through cutting-edge technology and exceptional service.

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